The purpose of this study was to explore the effectiveness of the "Digital Care Community Common Good" program in improving disease control indicators, self-management abilities, depression, and quality of life among patients with comorbidities and type 2 diabetes. The study was designed as a two-year experimental study, with a specific area in New Taipei City selected as the research site. In the first year, the main tasks include establishing an integrated intervention team composed of primary healthcare providers and community resources, expanding the functionalities of the mHealth platform, developing digital educational materials for diabetes comorbidities care, and recruiting and training 6 to 8 community care volunteers. Additionally, 169 eligible participants with type 2 diabetes and comorbidities will be recruited from four communities, completing baseline assessments and randomization into groups. In the second year, a 6-month intervention and effectiveness evaluation of the " Digital Care Community Common Good " program will be implemented. The intervention includes online and in-person educational sessions, telephone care, use of the mHealth platform (featuring educational, data monitoring, contextual learning, interactive, and reminders), as well as home visits, case discussions, and individualized care plans for high-risk cases. Disease control indicators, selfmanagement abilities, depression, and quality of life will be tracked immediately post-intervention, at 3 month, and at 6 month to assess outcomes and changes over time. This study expects to enhance health management for diabetes patients with comorbidities through digital care and interdisciplinary collaboration, offering evidence-based insights and recommendations for policy implementation in the integration of community and primary healthcare models.